Question

For a ray of light undergoing refraction through a triangular glass prism, the angle of deviation is the angle between?

• A. the incident ray and the normal at the point of incidence
• B. the refracted ray and the emergent ray
• C. the incident ray and the refracted ray
• D. the incident ray and the emergent ray

Answer 1

Answer:

D. the incident ray and the emergent ray

• The angle of deviation is the angle between the incident ray and the emergent ray.

• So, the angle of deviation is the angle which the emergent ray makes with the direction of incident ray, when this ray is passed from one medium to another at the refracting surfaces of the prism then creates an angle between the direction of refracted ray and the direction of incident ray.